2 years ago

Cos (pi/11)+cos (3pi/11)+cos (5pi/11)+cos (7pi/11)+cos(9pi/11)

1 answer:

4 0

All you have to do is input these terms in a scientific calculator and you would immediately get the answer. However, you should note that the units are in radians. Therefore, make sure that your calculator is in the mode of radians before inputing. Then, you would get an answer of 1/2.

You might be interested in

Rama jumps 2m 30cm long and swathi jumps 2m 60cm in a competition what is the total distance they jumped together

Furkat [3]

Answer:

Step-by-step explanation:

2 m 30 cm

2 m 60 cm

_________

4m 90cm

8 0

2 years ago

Write 68,127,000,000,000,000 in scientific notation. (x10^

Alexeev081 [22]

Answer:

6.8127 × 10^16

Step-by-step explanation:

Hope this helps:)

7 0

2 years ago

Read 2 more answers

One week a business sold 40 shirts. White ones cost $4.95, and the printed ones cost 7.95. In al $282 worth of shirts were sold.

Tanya [424]

Answer:

12 white 28 printed

Step-by-step explanation:

x = white y = printed

x + y = 40————(1)

4.95x + 7.95y = 282————(2)

Solve for x using 1st equation

x = 40 - y Plug in for x using 2nd equation

4.95(40 - y) + 7.95y = 282 Solve for y

198 - 4.95y + 7.95y = 282

3y = 84

y = 28 Plug in for y using 1st equation

x + (28) = 40 Solve for x

x = 12

I hope this helped and please mark me as brainliest!

8 0

1 year ago

Read 2 more answers

ASAP I NEED HELP I WILL GIVE BRAINLY:

Bogdan [553]

Answer:

Short Answer is C.

Step-by-step explanation:

182 students out of 400 live off-campus, so 182 divided by 400 = .455 or 45.5%

8 0

2 years ago

20 POINTS NO CAP PLEASE HELP ME NEED RIGHT ANSWER

Keith_Richards [23]

Answer:

3x-10+25+x+15=180

4x+30=180

4x=180-30

4x=150

x=37.5

8 0

2 years ago

Read 2 more answers